2165117227 has 8 divisors (see below), whose sum is σ = 2664759776. Its totient is φ = 1713059712.

The previous prime is 2165117189. The next prime is 2165117267. The reversal of 2165117227 is 7227115612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2165117227 - 2⁷ = 2165117099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2165117192 and 2165117201.

It is not an unprimeable number, because it can be changed into a prime (2165117267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11896158 + ... + 11896339.

It is an arithmetic number, because the mean of its divisors is an integer number (333094972).

Almost surely, 2^2165117227 is an apocalyptic number.

2165117227 is a deficient number, since it is larger than the sum of its proper divisors (499642549).

2165117227 is a wasteful number, since it uses less digits than its factorization.

2165117227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23792517.

The product of its digits is 11760, while the sum is 34.

The square root of 2165117227 is about 46530.8201840458. The cubic root of 2165117227 is about 1293.6808174104.

The spelling of 2165117227 in words is "two billion, one hundred sixty-five million, one hundred seventeen thousand, two hundred twenty-seven".